Do they get adopted by other instances? Are they still accessible from other instances? Can you still post on them from another instance?
Edit: From my understanding every instance that deals with a community has a cached copy. Will that copy disappear after a certain time, because it can’t phone to home anymore?
I haven’t bothered playing with instances yet I just made my account yesterday. I need another account if I leave lemmy.world?
As long as lemmy.world hasn’t blocked the other instance, you can access it through lemmy.world and write there with your current account
Aaaah ok
If lemmy.world dies, you’re account goes down along with it. You would then need to find a new instance and make a new account.